Gaining weight can be responsible and beneficial for general health if done thoughtfully and for the right reasons. For individuals who are underweight or have lost weight due to illness, gaining weight can help improve energy levels, immune function, and overall well-being. However, it is important to focus on gaining weight through a balanced diet rich in nutrients rather than just increasing calorie intake with unhealthy foods.

Consulting a doctor or a dietitian can help create a safe and effective plan tailored to individual needs. On the other hand, unnecessary or excessive weight gain, especially through unhealthy eating habits, can increase the risk of health problems like diabetes, heart disease, and joint issues. So, weight gain should be approached responsibly, considering personal health status and goals.